| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 16 |
5.8%
|
| 2 | Every few weeks | 39 |
14.2%
|
| 3 | Every few months | 114 |
41.6%
|
| 4 | Not at all | 105 |
38.3%
|
| Sysmiss | 29 |